August weather forecast
Rockville, CT

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Weather in August

The last month of the summer, August, is another warm month in Rockville, Connecticut, with an average temperature varying between 80.1°F (26.7°C) and 61.3°F (16.3°C).

Temperature

An average high-temperature of a still moderately hot 80.1°F (26.7°C) marks August, exhibiting a close resemblance to the conditions in July. During the nights in August, Rockville experiences a consistent average temperature of 61.3°F (16.3°C).

Humidity

In August, the average relative humidity in Rockville, Connecticut, is 76%.

Rainfall

In August, in Rockville, the rain falls for 9.8 days. Throughout August, 0.91" (23mm) of precipitation is accumulated. Throughout the year, in Rockville, there are 105.6 rainfall days, and 9.84" (250mm) of precipitation is accumulated.

Snowfall

In Rockville, snow does not fall in June through October.

Daylight

The average length of the day in August is 13h and 49min.
On the first day of the month, sunrise is at 5:44 am and sunset at 8:07 pm. On the last day of August, sunrise is at 6:15 am and sunset at 7:24 pm EDT.

Sunshine

The months with the most sunshine in Rockville are July and August, with an average of 10.3h of sunshine.

UV index

June through August, with an average maximum UV index of 6, are months with the highest UV index in Rockville, Connecticut. A UV Index estimate of 6 to 7 represents a high threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: A maximum daily UV index of 6 during August morphs into the following directions:
Implement precautions and maintain sun safety methods. Avoidance of sunburn is demanded. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Opt for tightly woven and loose clothing to enhance protection from the Sun.
Updated: Feb 10, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the usual temperature for Rockville in August?

August temperatures vary between a high-temperature of 80.1°F (26.7°C) and a low-temperature of 61.3°F (16.3°C). The average heat index (a.k.a. 'real feel', 'felt air temperature'), which factors the actual air temperature with the relative humidity, in July is appraised at 87.8°F (31°C).

What is the average humidity in August in Rockville?

In August, the average relative humidity is 76%.

How many days does it rain in August in Rockville?

In Rockville, Connecticut, in August, during 9.8 rainfall days, 0.91" (23mm) of precipitation is typically accumulated.

When it does not snow in Rockville?

In Rockville, Connecticut, snow does not fall in June through October.

What is the average length of the day in August in Rockville?

The average day length in August in Rockville is 13h and 49min.

When are sunrise and sunset in August in Rockville?

In August, on the first day of the month, sunrise is at 5:44 am and sunset at 8:07 pm. On the last day of the month, in Rockville, sunrise is at 6:15 am and sunset at 7:24 pm EDT.

What is the month with the most sunshine in Rockville?

July and August, with an average of 10.3h of sunshine, are months with the most sunshine.

How many hours of sunshine does Rockville have in August?

In August, the average sunshine duration in Rockville is 10.3h.

What are the months with the highest UV index in Rockville?

The months with the highest UV index are June through August, with an average maximum UV index of 6.

How high is the UV index in August in Rockville?

The average daily maximum UV index in August in Rockville, Connecticut, is 6. A UV Index reading of 6 to 7 represents a high health vulnerability from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in August
Rockville, CT

Average temperature in August - Rockville, CT
  • Average high temperature in August: 80.1°F

The warmest month (with the highest average high temperature) is July (82.2°F).
The month with the lowest average high temperature is January (32.4°F).

  • Average low temperature in August: 61.3°F

The month with the highest average low temperature is July (62.6°F).
The coldest month (with the lowest average low temperature) is January (19.8°F).

Average pressure in August
Rockville, CT

Average pressure in August - Rockville, CT
  • Average pressure in August: 29.98"Hg

The month with the highest atmospheric pressure is November (30.08"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).

Average wind speed in August
Rockville, CT

Average wind speed in August - Rockville, CT
  • Average wind speed in August: 5.2mph

The windiest months (with the highest average wind speed) are January and March (8.2mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in August
Rockville, CT

Average humidity in August - Rockville, CT
  • Average humidity in August: 76%

The month with the highest relative humidity is February (80%).
The month with the lowest relative humidity is April (71%).

Average rainfall in August
Rockville, CT

Average rainfall in August - Rockville, CT
  • Average rainfall in August: 0.91"

The wettest months (with the highest rainfall) are May, June and July (1.1").
The driest month (with the least rainfall) is September (0.39").

Average rainfall days in August
Rockville, CT

Average rainfall days in August - Rockville, CT
  • Average rainfall days in August: 9.8 days

The month with the highest number of rainy days is June (12.1 days).
The months with the least rainy days are January and February (5.5 days).

Average snowfall in August
Rockville, CT

Average snowfall in August - Rockville, CT
  • Average snowfall in August: 0"

The month with the highest snowfall is February (1.5").
The months with the least snowfall are June, July, August, September and October (0").

Average snowfall days in August
Rockville, CT

Average snowfall days in August - Rockville, CT
  • Average snowfall days in August: 0 days

The month with the highest number of snowfall days is February (6.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

Average daylight in August /
Average sunshine in August
Rockville, CT

Average daylight in August / Average sunshine in August - Rockville, CT
  • Average daylight in August: 13h and 5min

The month with the longest days is June (Average daylight: 15h and 12min).
The month with the shortest days is December (Average daylight: 9h and 12min).

  • Average sunshine in August: 10h and 2min

The months with the most sunshine are July and August (Average sunshine: 10h and 18min).
The month with the least sunshine is February (Average sunshine: 4h and 36min).

Average sunshine days in August
Rockville, CT

Average sunshine days in August - Rockville, CT
  • Average sunshine days in August: 18.3 days

The month with the most sunshine days is January (21.9 days).
The month with the least sunshine days is June (15.7 days).

Average UV index in August
Rockville, CT

Average UV index in August - Rockville, CT
  • Average UV index in August: 6

The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).

Average cloud cover in August
Rockville, CT

Average cloud cover in August - Rockville, CT
  • Average cloud cover in August: 34

The months with the most cloud cover are February and March (Cloud cover 49).
The month with the least cloud cover is August (Cloud cover 34).

Average visibility in August
Rockville, CT

Average visibility in August - Rockville, CT
  • Average visibility in August: 5mi

The months with the highest visibility are January, March, April, October, November and December (6mi).
The months with the lowest visibility are February, May, June, July, August and September (5mi).

Rockville, Connecticut, USA

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